From a big perspective, there are currently only two common mounts for Nikon cameras. One is the F mount used by SLR cameras, and the other is the Z mount used by mirrorless cameras.
In fact, the F mount used by Nikon SLR cameras includes early AI, AI-S, AF, AF-P, AF-D, AF-G, AF-S, etc. Although the change of model means As it supports more and more functions, the physical structure of its mount is still the same. For example, the old AI mount lens from decades ago can still be screwed onto the latest Nikon SLR camera smoothly and perform full manual exposure. Shoot.
In the early days, Nikon also produced Auto and K lens mounts, which were the predecessors of AI-mount lenses. If you want to use them on modern F-mount cameras, you need to modify the lens mount structure. Nikon also produces M-mount lenses for rangefinder cameras, as well as various large-format lenses specially produced for large-format cameras, as well as enlarger lenses using M39 screw mounts.
The Z-mount is the latest lens mount designed by Nikon for its mirrorless cameras. Its mount has a relatively large diameter and a short flange distance, which can greatly improve the basis for lens design. It is easier to design high-quality lenses.